| Method Code | Description |
|---|---|
| AR | Adult Remains |
| BFC | Butterfly Count |
| BLDL | Building Lights |
| DSD | Direct Search -- Daytime |
| DSD/DSN | Direct Search, day and night |
| DSN | Direct Search -- Nightime |
| MS | Museum Specimen |
| OLHI | Outdoor Light-High Intensity |
| OLLI | Outdoor Light-Low Intensity |